NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1962236257
Verify on CMS → Narine Chilyan
Gerontology Nurse Practitioner in Chatsworth, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,056 in Gerontology Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
303
Medicare Part D claims · 79 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$122.38
5 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Narine Chilyan filed 303 Medicare Part D claims in 2024 as a Gerontology Nurse Practitioner in Chatsworth, California, prescribing 89% generic.
- 303
- Part D claims, 2024
- 89%
- generic prescribing
- $122.38
- industry payments (Sunshine Act)
- ≥56th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Narine Chilyan
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1962236257), first enumerated 08/28/2024.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 303 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$122.38 in reported industry payments (5 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Narine Chilyan's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1962236257 · Gerontology Nurse Practitioner
NPI-10 · ENUM-NEW · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1962236257
- ENUM-NEW 2024
- TAX-MID 10K Gerontology Nurse
- RX-LIGHT 303
- BOOK-LIGHT 557 in California
- PHOTO-ENUM Devon Fennelly, CRNP · 2024
Narine Chilyan's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
303 ≥ 56th percentile 56% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Narine Chilyan?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
303 78% vs specialty avg
Specialty distribution in California
How Gerontology Nurse Practitioner compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gerontology Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1962236257 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Gender | Female |
| NPI Issued | 08/28/2024 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Narine Chilyan. Source: openpaymentsdata.cms.gov.
Total received
$122
Largest payer
Amgen Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Narine Chilyan. To verify Narine Chilyan's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Narine Chilyan - brand share 11.0%
Gerontology Nurse Practitioner average
11% brand-name claims vs 89% generic, on 303 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
303
Total Claims
$41K
Total Drug Cost
79
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 435.267
- Total Day Supply
- 11,923
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $21K
- Generic Drug Cost
- $20K
- Opioid Claims
- 16 (5.3% rate)
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 69.4 years
- Avg HCC Risk Score
- 1.18
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 17, 65-74: 44, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Metformin Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gerontology Nurse Practitioner Overview
How Narine Chilyan fits within the Gerontology Nurse Practitioner landscape nationally.
10,056
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,350
Avg Claims per Provider
Narine Chilyan's 303 claims are below the specialty average of 1,350.
Nationwide Gerontology Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Chilyan, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2024)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gerontology Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chilyan.
One of 557 Gerontology Nurse Practitioner providers enrolled in California, 5 are shown here.
Abigail Abar-Calica
N.P.
Menlo Park, CA
Michelle Abrams
NP
Thousand Oaks, CA
Roman Emmanuel Acebedo
Carson, CA
Karina Acevedo
AGACNP-BC
Los Angeles, CA
Lisa Adamek
NP
Roseville, CA
Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Narine Chilyan's specialty? ▼
Narine Chilyan specializes in Gerontology Nurse Practitioner and practices in Chatsworth, California.
How much does Narine Chilyan prescribe under Medicare Part D? ▼
In 2024, Narine Chilyan wrote 303 Medicare Part D claims totaling $41K in drug costs for 79 beneficiaries.
Where is Narine Chilyan located? ▼
Narine Chilyan is located at 22024 LASSEN ST STE 100, Chatsworth, CA, 91311. Phone: (707) 240-4040.
What is Narine Chilyan's NPI number? ▼
Narine Chilyan's National Provider Identifier (NPI) is 1962236257, issued on 08/28/2024.
Does Narine Chilyan prescribe more brand-name or generic drugs? ▼
Narine Chilyan's prescribing is 11% brand-name and 89% generic drugs by claim count, with $21K in brand drug costs.
Does Narine Chilyan prescribe opioids? ▼
Yes, Narine Chilyan had 16 opioid claims in 2024 with an opioid prescribing rate of 5.3%.
How many Gerontology Nurse Practitioner providers are there in the US? ▼
There are 10,056 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,350 Medicare Part D claims per year.
What drugs does Narine Chilyan prescribe most often? ▼
Based on 2024 Medicare Part D data, Narine Chilyan's most frequently prescribed drugs include Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Narine Chilyan accept Medicare? ▼
Narine Chilyan appears in CMS Medicare data with 303 Part D claims and 79 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Narine Chilyan's credentials? ▼
Narine Chilyan's NPI is 1962236257. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.